OMG those are the woooorrrrrssst. I REALLY hate "so what did you do today?" because it's like, uuh.. I did lot's of stuff, but I don't know which stuff YOU want to hear about. You want to know if I did something productive, right? NO, I DID NOT, THERE YOU GO. But wait! Maybe I DID do something productive, I'm not actually sure what counts as productive to you. I HAVE NO IDEA WHAT TO SAY.
But anyway, yeah, your example is perfect, because I totally can't tell what that lady meant. XD; I think people must be able to formulate ideas of what they want to do on the spot, and there's like a natural path that the mind usually follows for ideas and solutions or something, so I guess NT people follow that usually, (like, think of your area of expertise, your "special interest".. doesn't your mind just zip along so naturally when you're thinking about that? That ability must be spread out over many subjects for NTs) so a normal person would have already had an idea of what they wanted to do, so they wouldn't have even wondered what she had meant.
That's what I think, anyways.
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"You gotta keep making decisions, even if they're wrong decisions, you know. If you don't make decisions, you're stuffed."
- Joe Simpson